so ya wanna go simple- then do it..
get 2 - power growers from General Hydroponics or get 4...
they are very simple...

you make a nutrient mixture in the bottom bucket
you plug in the unit.
the water from the bottom bucket gets pumped to the top bucket and feeds your plants

very simple and perfeect for 400watts..
Garden Knowm Reviewed by Garden Knowm on . im gunna buy this, just wanna c what u all think... ok heres the page: http://www.discount-hydro.com/complete.asp -Its the "DH System 4," the fourth one down from the top. looks like a professionally done bubbler system. should i go for it? its around 1 grand. -or should i just make my own? Rating: 5